LEUCHTENBERGIA. 107 
This plant was collected by Dr. Rose in the state of Querétaro, Mexico, in 1905, and 
has repeatedly flowered each spring since 1906. It is called pellote or peyote in Mexico. 
Echinocactus helianthodiscus Lemaire (Salm-Dyck, Cact. Hort. Dyck. 1844. 17. 1845), 
given as a synonym of Echinocactus turbiniformis, was never described. 
Illustrations: Bliihende Kakteen 1: pl. 39,a; Schumann, Gesamtb. Kakteen f. 77; 
Monatsschr. Kakteenk. 5: 119; 12: 91; Pfeiffer, Abbild. Beschr. Cact. 2: pl. 3; Schelle, 
Handb. Kakteenk. 203. f. 136, as Echinocactus turbiniformis; Curtis’s Bot. Mag. 69: pl. 
3984, as Mammillaria turbinata. 
Figure 115 isfroma photograph ofa plant collected by Dr. Rose at Higuerillas, Querétaro, 
Mexico, in 1905; figure 116 is copied from the plate in the Bliihende Kakteen cited above. 
Fic. 117.—Leuchtenbergia principis. 
-\ 
io ~ 2? ° 
\ / 3 ) 14. LEUCHTENBERGIA Hooker in Curtis’s Bot. Mag. 74: pl. 4393- 1848. 
; : i ; -like, slender 
A low, simple or cespitose cactus, with a thickened woody base; tubercles finger ike, ; 
much elongated. arranged in indefinite spirals; areoles on the ends of the tubercles; spines several, 
weak, often papery ; flowers from near the center of the plant, large, yellow, funnelform: campanulate ; 
scales on the ovary few, broad, naked in their axils; fruit probably dehiscing by a basal pore. 
Type species: Leuchtenbergia principis Hooker. 
The genus contains but one species; both genus and species were named for Eugene 
de Bauharnais, Duke of Leuchtenberg and Prince of Eichstadt, a French sol fer an 
statesman (1781-1824). The generic name is usually credited to Hooker and Fischer, 
